【医】 proencephalus
crack; rend; split
【医】 cleavage; cleft; crena; crenae; diastem; diastema; fissura; fissure
gap; rictus; rima; rimae; schistasis; schisto-; schizo-
a specified number; brow; forehead; quantum
【医】 brow; forehead; frons; fronto-; metopium; metopo-
【医】 exencephalon; exencephalus